There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

A person was killed at a house party. When the police arrive, there are six people present in the house who are the friends of the victim. The name of the friends is Rohit, Aman, Nick, Gagan, and Randy.

Near the dead body, they find a few numbers written with blood by the victim on the floor. The numbers are 8, 5, 4, and 11.

The police arrests one of the friends for the murder. Whom did they arrest and why?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

How many sides does a circle have?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?